Children just love knock-knock jokes, and this book is absolutely stuffed with them! It's bubbling over with silly fun and laugh-out-loud illustrations, and is absolutely guaranteed to have you in rolling on the floor. Ideal for young jokers, japesters, and jesters aged 6+.About the Author: Sally Lindley is an experienced and well-respected children's book writer. She has written numerous titles, including puzzle books and children's reference. Joe Fullman is a non-fiction author with more than 60 titles to his name on subjects ranging from geography, history and science to music, cooking and maps. He is based in London.